開口のある区画の乱流熱対流に関する3次元数値計算

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In order to acquire a better knowledge on the heat diffusion phenomenon that is involved in the functional design of safe and comfortable environment for marine systems, a precise numerical method is needed. However, as the problem concerned here such as a marine fire, is generally too complicated to consider all the factors in a practical simulation. Therefore, only decisive factors are considered and the others are simplified. Especially, the selection of a suitable turbulent model is very important for a successful simulation. In this paper, a 3-D numerical simulation of a turbulent buoyant flow induced by the energy from a fire at an open compartment is carried out. The compartment, which is a common type of cabin with furniture of a passenger ship, is connected through a door to a corridor. The geometry of the compartment is chosen so that the comparison with the results of an available full-scale experiment is possible. The governing equations are solved numerically by a finite volume method. The Smagorinsky SGS model, which has been extended to account for the effect of buoyancy, is employed to represent the turbulence. Two types of compartment fires are simulated. Since the simulation of combustion is not the purpose of the study, the heat release used for the computation is taken from the experiment data of combustible materials. As results, the prediction of temperature in the room shows good agreement with the experimental data.
社団法人日本船舶海洋工学会の論文
2000-09-04

開口のある区画の乱流熱対流に関する3次元数値計算

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